Separable fastener



NOV- 25 W. J. KAMMERER SEPARABLE FASTENER Filed March 10 1924 T INVENTOR.

, ATTORNEY Patented Nov. 25, 1924. UNITED STATES 1,516,737 PATENT OFFICE.

1 wI LIL I AM J. KAMMERER, or NEW smear. Y.

sErABABLE FASTENER.

Application filedMareh 10, 1924. Serial No. 698,169.

7 '0 allwlzom it may concern:

Be it knownthat I, WILLIAM J. 'KAMMER- ER, a citizen of theUnited States, residing at New York city, borough of Manhattan, in

the county of New York andStateof New York,.have invented certain new and useful Improvements in Separable Fasteners, of

- which the followingis'a-specification..

This im entionrelates to separable fasteners comprisingengaging stud and socket members, and has particular. reference to such devices as are usedon automobile curtains, draperies, suit cases, brief bags, and for similar purposes.

My invention provides a fastener which while designed primarily to securea curtain or other fabric to a rigid member, may

1 be readily altered" as to various detailsso as to include avery wide variety of uses where afastenerat once reliable and easily detachable maybe desired. Another object of my I invention is to provide a fastener consisting of stud and socket members so that'either the one or the other may with only slight chan es in construction be fastened-to the curtain or to the rigid member as maybe desired. Another ob ect of my invention is to provide a fastener that possesses evident and marked advantages over prior devices as to the cost of manufacture and assemblage.

With the foregoing and other objects in view the'invention consists in the arrangement andcombination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practieal embodiment thereof reference ishad to the accompanyingdrawings, in. which like reference characters designate the same partsln the several v1ews, and 1n wh1ch-- Figure 1 is a central longitudinal section showing the construction of the fastener and the method of attachment when the'stud is attached to the curtain. l

Fig. 2 is a sectional view taken along the line 2-2 of Fig. 1.

Fi 3 is a central longitudinal section of the astener showing its construction and themethod of attachment when the socke member is attached to the curtain. 1

Fig. 4 is asectional view taken along the line 4-4 of Fig. 3;

Fi 5 is an enlarged sectionalview of i a dots. of Fig. 3. Y

Referring now more specifically to the drawings, and first to Figures 1 and 2 to dis close one modification of the: fastener, I show a separable fastener comprising essentially a head 1 mounted upon a shank 2 and a split socket member 3 slidably located within the casing 4 so as to belocked over junctionof the two cones is rounded along the periphery as shown at 6 in order to minimize whatever litttle wear the head may under the worst conditions suffer.

The socket member 3 is in the form of a circular ring centrally divided into halves along the vertical axis and of cylindrical channel section. The upper and lower flanges 28 of the socket provide means to enable the two portions or sections of said socket to slide readily within the casing 4, and are sufficiently wide to prevent tilting of said portions which the forces applied at. the upper or lower ends of the socket by the head would have a tendency to cause when attempting to attach or separate the fastener.- The socket member is also beveled off along its inner edges as shown at 7 and 8 substantially parallel with the elements of that conical portion of the head 1 with which such beveled edge is to engage. This constructionin co-operation with the rounded edge 6Yof the head effects a more easy operation of the fastener by reducing to a minimum all unnecessary vfriction. Being thus inde endent of friction, ascientific de sign of tiie fastener is possible in that the sizes of the angles of the conical portions of the head 1 may now be proportioned direct- =ly as the magnitude and the ratio of the forces desired to operate the fastener.

i The cylindrical casing 4 has in one of the bases a central cylindrical recess or extension 9 havin a hole adapted toreceive a. screw 10. The rim portion of said hole is constructed-with a bead 11, for reinforcing and stiffening the extension 9 at the point of attachment of the screw. The extension is likewise of sufiicient sizeto-receive the-- will coincide with the face of the plate. 25.

entire head 1. In the opposite base of the casing 4:, there is an 0 'ening 13 of relatively,

considerable size, yet caving suflicient metal on that base for thesocket to-engagewith and slide upon.

The resilient ring is made preferably of rubber and is adapted at 14 to' embrace the body of the socket member 3. At both'sides it has circular rabbets, as at 15, to receive the flanges ofthesocket member, the ring itself being of sufi'icient size tosubstantially fill the casing 4 when under stress, thus preventing any possible tilting or sidespringing of the ring.

The rigid support 12 is of course to be recessed so as .toreceive the casing 4, the face of the casing being preferably .flusli with the side of the supporting member.

Secured to the shank 2 is the-finger piece 16. fastened to a circular plate 17 which cooperates which a circular plate 18 havin prongs 19 adapted to look over the plate 1? so as to hold the curtain 20 in rigid attachment therebetween.v Thisdouble plate construction has the advantage of eliminating the. possibility of rippingthecurtainif the curtain should sufi'era severe lateral pull. 7 The fastener-illustrated in Figures 3 and 4 embodies all the unique principles of construction of the fastener shown above, and

indicates another preferred construction of the invention. It is worthy of notekthat the two fasteners differ very little from each other as to details of construction and operation, and that therefore both designs may at once be used readily for practical purposes.

shown the head member is attached tothe rigid support 12, while the socket portion is borne by the curtain 20. The head 1 and the shank 2 areidentical with those shown in Figs. 1 and 2Yexcept that the shank terminates in a screw 10. The screw 10 is notched out at 21 to receivethe extension or lug 22 of the plate. 23'so as to prevent, any relative rotation as between said, plate 3 and said screw. Therefore, by

adding the nail 24 to preventthe plate 23 from rotating, all chances of the screw comingloose are eliminated. 1

As mounted upon the curtain, the recess 7 9' of the casing 4 new. forms the finger piece, and so inorder to facilitate the grasping thereof, it is fitted with a peripheral end portion 9". Thecasing 4; has a flange29 adjacent to the curtain 20, and prongs 17 which after being passed through the curtain are. adapted to lock or'clinchover the plate 25. The peripheral portion of the .p1ate25' is offset so that the face of the prongs 17 when they are locked in place ing the sides of-saidcasing an This plate has an openin 26 for allowing. the passage of. the bee. 1 therethrough. The resilient ring 5 substantially fills said casing about the socket member 3.

I claim: p

1. A fastener comprising a headed shank, a casing to receive sa d shank, a socket member within the casing and consisting of a plurality of hollow partially. cylindrical portions having parallel curved end flanges surrounding thesame,xthe' shank head being projectable through the socket member,

the casing, and "recessed to .receive'said,

flanges, saidsocket memberv consisting of a plurality ,of. symmetrical portions actuated toward each other=by said resilient member so as to look behind saidhead.

3. In a separable fastener, the combination of a shank having ahead, a cylindrical casing, a solid rubber ring within and'confined ,by-said casing, and a socket member composed of a plurality of relativelymovable parts constitutin ,a sleeve liningsaid ring andaextending om one fiat slde of the casin to the other and 'throu h which said hea isiadapted to be force theresiliency of the rubber. acting to cause the 1 parts of. the sleeve to move toward-the axis of: the ring-andcasing to retainzthe parts together. i i I 4;. In acseparablefastener, the combination with a shank having. a head, 9. casing havingan opening spaced from the sides thereof to permit the entry ofsaid head, and a'socket member withinsaid casing composed of a plurality. of relat velmovableparts adaptedto receive and to 100 behind said head, of a rubber rin contactadapted to contain said socket .member so asto actuate the parts thereof toward each other, said rin serving to hold said socket-member'in: a 'nement with said opening for the ready reception of saidhead. f In, testimony whereof I fiix my signature. i

WILLIAM KAMMERER. 

